Enforce a Required Build Sequence in a Sign-Up Form
Learn to create a SignupFormBuilder that enforces setting required username and password fields before optional info. Explore how to track state internally to prevent incomplete form builds in backend Node.js applications.
We'll cover the following...
We'll cover the following...
Problem statement
You’re designing a secure sign-up flow for a backend service. Each sign-up form must include a username and password before proceeding to optional steps, such as email, profile image, or phone number.
You’ve been asked to implement a SignupFormBuilder that enforces this order of construction. Developers must call .withUsername() and .withPassword() first—in any ...